Thank you Storm! I just had a light bulb go off in my head about all of this. Yes, I do have to use a single pole to run 3 wired anything BECAUSE otherwise if I split the double pole to run different things then I would again run into the same problem as i did originally with drawing 30 amps out of an instument (like the 120 outlet) and having it catch fire........ right?! It's what everyone was trying to tell me!

« Last Edit: April 17, 2011, 08:51:52 PM by happycamperbrat »

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The Little GTO is a 102" wide and 40' long 1983 GMC RTS II and my name is Teresa in case I forgot to sign my post

Now you have me confused. All the installation photos are of a 14-30R, which is a 4-wire circuit requiring a double-pole breaker. The last photo, of a retail box, shows a TT-30R, which is a 3-wire outlet.

Are you going to replace the 14-30R with the TT-30R? I thought you were just going to use an adapter from the 14-30 to a TT-30?

If you are going to replace the 14-30 with the TT-30, ideally you would change to a single-pole, 30-amp breaker. The second (red) hot wire would be removed. However, it is not unsafe to continue to use the double-pole breaker in place now. Just leave the second pole unconnected.

Sorry Sean. I am leaving the 50amp as is. Just today I finished the installation of the 4 wire 30amp welder outlet. But Im still going to install a 3 wire 30amp RV plug, which is the last photo. I decided not to use the adapter after all, and am just going with a rv dedicated 30amp outlet.

« Last Edit: April 17, 2011, 09:25:09 PM by happycamperbrat »

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The Little GTO is a 102" wide and 40' long 1983 GMC RTS II and my name is Teresa in case I forgot to sign my post

Sorry Sean. I am leaving the 50amp as is. Just today I finished the installation of the 4 wire 30amp welder outlet. But Im still going to install a 3 wire 30amp RV plug, which is the last photo. I decided not to use the adapter after all, and am just going with a rv dedicated 30amp outlet.

Ah. OK, then, yes, you want to use a 30-amp single pole breaker and #10 THHN or THWN wire.